Greer Hydraulics is now part of Parker Hannifin's Hydraulic Group. Greer's bladder accumulator line was the original bladder accumulator, now a major part of the Parker Accumulator product line. Website

Gresen is now part of Parker Hannifin's Hydraulic Group Gresen manufactured a wide range of hydraulic motors, pumps, control valves, cylinders, filters and electronic controls for on- and off-highway vehicles. Website